King Duvet Linenplace offers king duvets in two sizes. The industry standard size is generally considered to be 104 x 86 inches. We also offer oversized king duvets that are 4 inches wider and 8 inches longer than standard (108 x 94 inches). In our Morning Glory II duvet we offer Super King (110 x 110 inches) and Supreme King (120 x 120 inches). We also offer a hypoallergenic down alternative king duvet (Allusion).